KTM 450 SX & 505 SX ATV 2010 Repair Manual (P/N 3206070en)

KTM’s 2010 repair manual covers the 450 SX and 505 SX ATV models, with factory procedures for mechanical, chassis, and electrical service. Publication P/N 3206070en includes internal engine repair and suspension overhaul.

Searchable PDF with Workshop Bookmarks

Search, navigation, and wiring detail: Searchable text and embedded bookmarks provide access to workshop procedures, technical specifications, the wiring diagram, and the index. Small connector, pin, and wire-code labels in the wiring diagram are clearly readable when enlarged.

One printable PDF contains 247 pages: 244 numbered pages, front and back covers, and one blank page, all included in the total.

Engine Rebuilding, WP Suspension, and ATV Chassis Service

The following selected workshop topics highlight the manual’s repair coverage. Additional subjects include air-filter servicing and preparation for storage.

• Engine and transmission: Step-by-step procedures for engine removal, crankcase disassembly, crankshaft repair, cylinder-head service, clutch inspection, and transmission shaft assembly.

• WP suspension: Front and rear shock absorber disassembly, internal inspection, seal servicing, damper bleeding, nitrogen charging, and damping adjustments.

• Steering and running gear: Steering-column bearing replacement, wheel-carrier removal, A-arm bearing replacement, front-end alignment, and rear axle bearing service.

• Carburetor: Keihin FCR-MX 41 disassembly and reassembly, accelerator-pump checks, float-level adjustment, and throttle position sensor testing.

• Brakes and hydraulic clutch: Brake-pad replacement, fluid changes, lever free-play checks, parking-brake operation, and hydraulic clutch bleeding.

• Electrical diagnosis: Battery and charging tests, starter-relay checks, ignition fault tracing, and a color wiring diagram with component and cable-color legends.

KTM assumes repair work will be performed by a fully trained mechanic with the required special tools and a fully equipped workshop; general workshop methods are not taught.

Engine Inspection and Reassembly

For routine maintenance and component-level repair, the inspection criteria let mechanics compare reusable parts with factory wear limits before reassembly. Engine tolerance tables distinguish the models’ piston and cylinder dimensions and intake camshaft measurements.

Valve train and crankshaft: Coverage extends to connecting-rod and crank-pin replacement, crankshaft end-play measurement, camshaft bearing inspection, valve-seat assessment, and shim adjustment. Valve-timing views show the alignment references used with adjustment bush bridge 77329050000.

Clutch and gearbox: Exploded views support inspection of the clutch, shift mechanism, and five-speed transmission. The starter-drive section covers the freewheel, torque limiter, and starter idler gear.

Cooling and lubrication: Water-pump work includes shaft-seal replacement and seal orientation. Cooling-system filling and bleeding procedures accompany oil-pump inspections and an oil-circuit schematic identifying the pressure and suction paths.

Shock Rebuilding and Chassis Alignment

The suspension chapters cover the WP 3612 BAVP DCC front shocks and PDS 4618 BAVP DCC rear shock. Internal work includes shim-stack arrangement, heim-joint replacement, rear pilot-bushing calibration, and vacuum filling, with nitrogen-charging specifications and special-tool references.

Follow the manual’s pressure-release precautions when servicing the nitrogen-charged shocks.

Front end and rear axle: Toe, camber, and fork-offset adjustments accompany wheel-bearing and A-arm procedures. Rear wheel eccentric service includes bearing and seal installation with press mandrel 83019012000; the axle clamping nut’s left-hand thread requires particular attention to avoid thread damage.

Handlebar positioning, throttle-cable adjustment, and clutch-lever adjustment are also covered. Brake procedures address front and rear fluid replacement, pad inspection, and caliper handling; the parking brake operates through the front hand-brake lever.

Carburetor Setup and Electrical Fault Tracing

Carburetor illustrations identify the float, jets, throttle slide, and accelerator-pump components. The text connects throttle-slide setup with accelerator-pump timing and throttle position sensor adjustment, including separate resistance and installed-voltage checks.

Starting and charging: Battery service, quiescent-current tests, and alternator checks support fault isolation. Ignition coverage includes Performance/Soft curve selection and coil and pulse-generator measurements using peak voltage adapter 58429042000.

CDI testing limitation: Controller function requires an ignition test bench. The manual warns that testing the CDI controller with a conventional measuring instrument can damage its electronic components.

Service schedules distinguish workshop maintenance from rider checks. Engine, carburetor, and chassis torque tables accompany an illustrated special-tool catalog with ordering numbers.

Examples from the Chassis Torque Tables

For both covered models, the chassis specifications list 45 Nm for the M10 handlebar-support nut and 40 Nm for the M20x1.5 bottom steering-column screw. These are separate fastener applications within the steering assembly.

The M10 front shock absorber screw is specified at 45 Nm. The M18x1.5 rear wheel hub nut is listed at 130 Nm; that value belongs to the hub nut, not the separate left-hand-thread axle clamping nut.